Increased Antioxidants of Agastache rugosa by the Night Interruption Time

Sungjin Kim; Seungwon Noh; Jongseok Park

doi:10.12791/KSBEC.2022.31.4.319

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2022 Vol.31, Issue 4 Preview Page Next Page

Original Articles

Increased Antioxidants of Agastache rugosa by the Night Interruption Time 야파(night interruption)처리에 의한 배초향의 항산화 물질 증가

31 October 2022. pp. 319-324

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Abstract

The objective of this study was to determine the proper night interruption of photoperiods and dark periods for accumulating bioactive compounds of Agastache rugosa without decreasing plant growth. Five-week-old seedlings were transplanted in a DFT system with white LEDs. A. rugosa was treated with night interruption time treatments of 18:1:2:3, 18:2:2:2, 18:3:2:1 (light:dark:light:dark), and 20:4 (control) for 4 weeks. There were no significant differences except for leaf length, leaf width, and the number of flowers. The content of antioxidants in the shoot of A. rugosa was high in tilianin and acacetin, and the content of rosmarinic acid (RA) was significantly higher in the underground part. The RA content per dry weight of A. rugosa was 47.92 and 51.46% higher than that of the control in 18:1:2:3 and 18:2:2:2, and tilianin and acactin per dry weight were significantly higher in 18:3:2:1. There was no significant difference in growth due to the same day light integral, but 18:2:2:2 showed high total polyphenol contents. Therefore, it is thought that the effect of increasing secondary metabolites of A. rugosa without degradation of growth can be expected through night interruption treatment in plant factory cultivation systems using artificial light.

Keywords

acacetin

Agastache rugosa

night interruption

rosmarinic acid

tilianin

본 연구는 식물 공장에서 배초향(Agastache rugosa Kuntze) 재배 시, 야파시간에 따른 생육과 항산화 물질 함량에 미치는 영향에 대하여 살펴보고자 수행하였다. 본엽 4매인 배초향 묘를 백색 LEDs를 이용한 수경재배 시스템에 정식하였다. 야파처리 효과를 알아보기 위해 06시부터 광도 200μmol·m^-2·s^-1조건으로 시간을 24시간 주기에서 18:1:2:3, 18:2:2:2, 18:3:2:1 (명기:암기:명기:암기) 비율로 처리하였으며 대조구는 20:4(명기:암기)로 설정하여 4주간 재배하였다. 엽장과 엽폭, 화아수를 제외하고는 유의적 차이가 발생하지 않았다. 배초향 지상부의 항산화물질 함량은 tilianin과 acacetin이 높았고, 지하부에서는 rosmarinic acid(RA)의 함량이 유의하게 높았다. 배초향의 건물중당 RA함량은 18:1:2:3과 18:2:2:2에서 대조구보다 47.92, 51.46% 높았고, 건물중당 tilianin과 acactin은 18:3:2:1에서 유의적으로 높게 나타났다. 야파처리를 하였을 때 동일한 누적 광량으로 인해 생육 차이를 보이지 않았지만, 18:2:2:2의 야파처리가 총 폴리페놀 함량이 높게 나타났다. 따라서 인공광을 이용한 배초향 재배 시스템에서 야파처리를 통하여 생육 저하 없이 배초향의 항산화 물질 증대 효과를 기대할 수 있을 것으로 사료된다.

키워드

로즈마린 산

배초향

아카세틴

야파

틸리아닌

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Information

Publisher :The Korean Society for Bio-Environment Control
Publisher(Ko) :(사)한국생물환경조절학회
Journal Title :Journal of Bio-Environment Control
Journal Title(Ko) :생물환경조절학회지
Volume : 31
No :4
Pages :319-324
Received Date : 2022-09-06
Revised Date : 2022-10-10
Accepted Date : 2022-10-10
DOI :https://doi.org/10.12791/KSBEC.2022.31.4.319

Journal of Bio-Environment Control ISSN:1229-4675(Print) 2765-3641(Online) 생물환경조절학회지

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